APPLICATION OF THE MAPPED STRESS TENSOR CONCEPT FOR ANISOTROPY ANALYSIS IN SHEET METAL FORMING

E. B. LAS CASAS; J. RUBERT; S. OLLER; E. OÑATE

Conferencia; Numisheet 1996; 1996

In this paper, after a brief review of the most popular models for anisotropic plasticity for metals, an explicit implementation of a program using the mapped stress tensor to formulate the large deformation problem is described. The formulation permits the use of isotropic yield and potential functions, incorporating a mapping between the real (anisotropic) space and the fictitious (isotropic) space. Example problems are discussed.